Q. Explain chemiosmotic hypothesis for ATP synthesis.

Q. State two advantages of vegetative propagation.

Q. Name the scientists who have contributed to the following.
(i) Reverse transcription.
(ii) Photorespiration.
(iii) Principle of limiting factors.
(iv) Photolysis of water.

Q. Give two differences between heart wood and sap wood.

Q. Mention one cause for variation in nature.

Q. Mention three features of the Neanderthal Man.

Q. Mention any two functions of the human placenta.

Q. Define cryopreservation.

Q. With reference to the levels of organisation, differentiate between living organisms and non-living objects.

Q. Expand the following abbreviations.
(i) RDT
(ii) BAC
(iii) SSBP
(iv) IUCD

Q. What is central dogma?

Q. Define phylogeny.

Q. Explain the term perianth.

Q. Define complete linkage. Give an example of a cross, showing complete linkage.

Q. After fertilisation, the integuments of an ovule develop into

1. Seed
2. Seed coat
3. Fruit
4. Fruit wall

Q. Explain the role of hormones during the menstrual cycle.

Q. Give a graphical representation of the $C_3$ cycle.

Q. Give an account of Lederberg's replica plating experiment to show the genetic basis of evolution.

Q. The curve showing the amount of light absorbed at each wavelength is called as

1. Action spectrum.
2. Absorption spectrum.
3. Quantum yield.
4. Quantum requirement.

Q. The act of expelling the full term foetus from the uterus is termed as

1. Implantation
2. Gestation
3. Parturition
4. Capacitation

Q. What is symbiosis?

Q. Explain the process of sex determination in honey bees.

Q. Differentiate between connecting link and missing link.

Q. Give scientific terms for each of the following.
(i) The smallest unit of DNA which can mutate.
(ii) Type of water absorption by roots where metabolic energy is required.
(iii) Statistical study of human population.
(iv) Multiple effects of a gene on the phenotype of an organism.

Q. Discuss the role of cambium in secondary growth of dicot stems.

Q. What is Founder's effect?

Q. Give four adaptations shown by flowers pollinated by wind.

Q. What is the difference between the teeth of apes and the teeth of man?

Q. Meselson and Stahl's Experiment proved

1. Transduction
2. Transformation
3. DNA is the genetic material
4. Disruptive DNA replication